kafka kerberos 配置好后，运行起来，使用新生产者报错

[2018-04-10 18:22:31,383] ERROR The TGT cannot be renewed beyond the next expiry date: Wed Apr 11 17:34:01 CST 2018.This process will not be able to authenticate new SASL connections after that time (for example, it will not be able to authenticate a new connection with a Kafka Broker). Ask your system administrator to either increase the 'renew until' time by doing : 'modprinc -maxrenewlife kafka/gateway@HADOOP.COM ' within kadmin, or instead, to generate a keytab for kafka/gateway@HADOOP.COM. Because the TGT's expiry cannot be further extended by refreshing, exiting refresh thread now. (org.apache.kafka.common.security.kerberos.KerberosLogin)